how to acitvate virtual environment in linux code example

Example 1: how to activate virtual environment using ubuntu

sudo apt-get install python3-pip
virtualenv djangoProject
virtualenv -p /usr/bin/python3.6 djangoProject
source djangoProject/bin/activate

Example 2: activate venv in python

(tutorial-env) $ pip search astronomy
skyfield               - Elegant astronomy for Python
gary                   - Galactic astronomy and gravitational dynamics.
novas                  - The United States Naval Observatory NOVAS astronomy library
astroobs               - Provides astronomy ephemeris to plan telescope observations
PyAstronomy            - A collection of astronomy related tools for Python.
...